Cylinder-reboring machine



July 17, 1923" 1.461.877

M. H. HANSEN CYLINDER REBORING MACHINE Filed Aug. 8, 1921 woe/latex Paemea' July 17, 1923.

-' IUNIT'ED'ST PATENT- OFFICE. v

' n iuq iie 'jiea August a; real. Seriai Fe. semen.

r0 humanist.-

Be it known thet L'Mnomon H, Hansen,

a citizen of :the "United States; and a V resident otithe unseen, county, of King, State of Wtshngton', hove; invented certain new anduseful Improvements in Cylinder Rehearing ehinegof-which the following isaspecificetion. 1 I r This. in ntion' relates, Ito improvements in cylinder reboring machines and more-per- 2; to rebore the cylinders of.o,i1' 0mobileen tof firstremote the engine fromfthe P s, It is, therefore, the o ject of this invenvehicle aid teke it to borin machine.

me od of operation not-on y considereble. time and labor in'r'emovmg end wthe" engine within the boring ut'elso'is e ensive.

tion to "overcome .the above .disadventages by the provision of a, portable, motor driven machine-thetmay be mountedupon the: c 71 removed there and may be secured index-s pf'en engne, after the head hasbeen thereon in"'proper posi tion for reboring thelindere, without-theinecessity of the en-. ne first being removed from the vehicle Other objects ofthe invention reside in the details of construction of a base plate for supportir? the boring mechanism which wherein- Figure 1 is aside elevation of a boring device constructed according to the present invention mounted functionally in position for rebomng the cylinder of an automobile engine; pert'of the engine being broken away to show the winner of securing the device thereto.

Referring more in.

. ticular1y to rnnchines-ofthet-characten for 1- desi reboring the worn cylinders automob le di ti r e the-chein'ter-of thereboring machines now commonly. ingu'se ,'it has been.

"on whi wall at its 11 r e 2 is nothing? longitudinal, section view ofLthe' r r1ug machine.

Fig-urea is a horizontal section taken on theline 3-3 in Figure 2..

Figure i is" e horizontahsection on the line 4-4 in Figure 2; illustrating the means for locking: the cutteredvencing rod against rotation;

detail to the drawgnates a bed platewhereon the-operati ports of the machine ere mounted and w ich is adopted to-seet u on the upper ends of the cylinders 2 of nn after the headline been removed there om; asis illustrated iii-Figure Ijof the draw]- inge, Thls .plate- 1 is provided centrally with it] lo n ndinelly directed slot "3 through wv'hic a bolt 4 is extended. At its lower end, the bolt, is fixed to a cross bar 5,'thet-is, edn'ptedtoextend across and inc;

engage the lower end of the cylinder edj'acent the one being rebored, and, at its upper eniilis threaded and has shut 6 theremay be tightened 'egeinst the plate to secure themachme in pos tion upon the t one-enact the plate 1- es val-sen .stendnrd'f, rovided on its outerface with vertically a, nod, spaced epart'bearinge 8 and 9 wherein is-conteinede revolubly meensot an electric motor 11 fixedly mountprovides for e substantial reduction of speed between the motor and boring shaft.

mounted andflo ltt dinnllfmoveble boring" shaft 10. This s eft is rotateiily driven by ed'i1pon-the bed'p'lete end which is conl'y keyed to the 10 be--.'

Threaded into the upper end of the bearing 8, in such manner that it will slidebl contain the upper end of the boring she 10 for rotatable and lo 'tudinal movement therein, is a tube 20. is is closed b it er end which has e thr ed rod 21 exten mg therethrough and slidable within a hole 22 bored ldngitudinelly and centrall within the upper end of the borin shift. thin the up end of the tube tati the removal of t e engine from the a bearing collar 25 is ed on the rod 21 and on the outside of the tube, a nut 26 is fixed against rotation on the rod, and interposed between the collar and nut and against opposite sides of the end wall of the tube, are

thrust bearings 27 27; the construction being such that the rod 21 will be held against lon itudinal movement but may bemotaterl within the sleeve and'within .the' bore of the shaftlO.

Fixed within the upper. end of the boring shaft by means of setscrews 29,.is a sleeve or' I claim nsnew "therein an collar 30 through which thefmd 21 is threaded, and fixed on the outside; and adjacent the uppenend of the tube 20, is abrecket 32 having a forked arm 33 pivotally fixed therein in position that it rnay moved to engage the nut. 26 to thereby prevent rotation' of the shoft 21- V It is apparent-flint; should the rod 21 he held against rotation, while the boring shaft 10 is being 'drivefi, the latter will be caused to move outwardlmdue to the threaded connection between therod-2l end-the sleeve 30.'

' At the lower end of theborin shaft 10 is a cutter head 40 which-may be c ,any desired type suitable for thelrebjoring of'cylinders, preferablyof an enbandable type, and it the outer end ofthe fed 21.is a crank for turni ngthe rod to manually adjnst or withdraw the cutter frome cylinder.

Assuming that the device is so constructed in using the same to rebore-e cylinder of an engine, the head is. first removed from the engine and the machine mounted upon the upper ends of'the cfilinders and secured theretoibmeans oft e bolt '4 as shown Fig. l. l e-cutter head is then ed'uste'd to;the.desired positionwithin the cy 'der by-rotating the t eft 21 by means of the handle flxediontl'te upper end thereof. Aftar. ropfir anjnsnnent of the cutter hes'been med c; 't

lockiiig'iermfiiiis moved to em dime-the nut 2c1s '6liet-Jthe io 21 willzbe held against rotation thereby. Operation ni -the niotor I1,- will-then-grotete the boring shaft and (gutter headfanditheflha t will be sdva'rided: downwardly "within the cylinder as it rritates by n eans of the threaded connection of the sleeve 30 secured therein with the rod 21.

' It he noted h tjfiw a device could bemounteduponthe f egwithont necessivehic e and that the costof who cylinders, as compared-to theme of usmg the present typepf machine -would be very It is further a parent that-various means could be to rive theboringshaft other than the onehere shown, and without dearting from the or th1sfreason, I 0 not wish to be limited 7 onl to the details of construction shown.

ving' thus described m invention, whet desireyto secure "byLetters-Petent, 1s:. y Y l 1. A'cylinder reborinq' machine com rialoin-base plate applicab eat the ends 0 the y 'ndBrB oi an engine and adapted to be adusta'bl anchored thereto, a standard at one end 0 the plate having bearingsformed thereon a bar shaft rotatably and longitudinally movab e'in said-bearin a-boring tool fixed to the lower-end of e shaft, a sleeve fixed in the-upperof said bearin ,imd slidabl containing the end of la boring-she ,anadjustzn'g rotetably fixed in'said sleeve and extended in a, threaded connection conoentrl'cal] within the borin shaft,-means-for manu y rotatin the a justing-rod to effect lon 'tudinaln ustment of the boring shift, an means for holding the adjustin rod against rotation to eflect automatic a vancernent of the boring shaft when in o oration 2. Acjinder reboring machine .compniging-a' haseplate, a standard on the plate having vertically'a'lined' bearings thereo a boring shaft rotetahly and longitudin y movable inlsaid bearmgs, a reboring tool fixed u on the lower end of said-shaft, a sleeve ,ed at its lower end in the upper of said bearings and slidebly tontahnngthe nfi per end of theboring-shaft, an advancing s aft rotatably fixed ,in-saidsleeve withits loweiz and threaded waxially' into the hering shift, a, "toj theiouten end of the inivn'ncingslmlit, and apivotally movable locking arm fixed 'onthe sleeveand mov-' sgirit oi the invention, and

- Signed-Eat Seattle, Washington, "this 2nd 

